118219877 has 2 divisors, whose sum is σ = 118219878. Its totient is φ = 118219876.

The previous prime is 118219873. The next prime is 118219879. The reversal of 118219877 is 778912811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113763556 + 4456321 = 10666^2 + 2111^2 .

It is a cyclic number.

It is not a de Polignac number, because 118219877 - 2² = 118219873 is a prime.

Together with 118219879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118219873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59109938 + 59109939.

It is an arithmetic number, because the mean of its divisors is an integer number (59109939).

Almost surely, 2^118219877 is an apocalyptic number.

It is an amenable number.

118219877 is a deficient number, since it is larger than the sum of its proper divisors (1).

118219877 is an equidigital number, since it uses as much as digits as its factorization.

118219877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 44.

The square root of 118219877 is about 10872.8964402316. The cubic root of 118219877 is about 490.7912760121.

The spelling of 118219877 in words is "one hundred eighteen million, two hundred nineteen thousand, eight hundred seventy-seven".